- Keen, F. P. 1938. Insect enemies of western forests (Revised 1939). United States Department of Agriculture Miscellaneous Publication 273209 p..
- Keen, F. P. 1929a. Bark beetles of the superfamily Scolytoidea infesting forest trees of western United States. United States Department of Agriculture, Bureau of Entomology, Forest Insect Investigations, 129 pp..
- Keen, F. P. 1952c. Scolytidae. Pp. 126-169. in: Insect Enemies of Western Forests. . 280 pp..
- Keen 1948
- Miller, J. M., and F. P. Keen. 1960. Biology and control of the western pine beetle (Dendroctonous brevicomus) A summary of the first fifty years of research. United States Department of Agriculture Miscellaneous Publication 800381.
- Keen, F. P. 1933b. A note on the hibernation habits of some engraver beetles of the genus Ips. Journal of Economic Entomology 26:297-298.
- Keen, F. P. 1928. Insect enemies of California pines and their natural control. California Department of Natural Resources, Division of Forestry, Bulletin 7113.
- Keen, F. P. 1929c. Insect enemies of California pines and their natural control. California Department of Natural Resources, Division of Forestry, Bulletin 7113.
- Craighead, F. C., J. M. Miller, J. C. Evenden, and F. P. Keen. 1931. Control work against bark beetles in western forests and an appraisal of its results . Journal of Forestry 29:1001-1018.
- Keen, F. P. 1916a. Seasonal history of Dendroctonus monticolae. Project 15a. Ashland-Lamb's Mine Unit. United States Department of Agriculture, Bureau of Entomology, Report 4.
- Keen, F. P. 1916b. Selection principle experiments with Dendroctonus monticolae. Ashland Area-Lamb's Mine Unit. United States Department of Agriculture, Bureau of Entomology, Report 12. 4 p.
- Keen, F. P. 1917. Seasonal history of Dendroctonus brevicomis, Ashland area, Lamb's Mine unit. United States Department of Agriculture, Forest Service, Pacific Southwest Laboratory, San Francisco, California. 74 p.
- Keen, F. P. 1923. War on the pine beetle: how men and - money are fighting to save our western pine from the beetle hordes . American Forestry 29:689-694.
- Keen, F. P. 1926. Pine beetle control in southern Oregon and northern California . Timberman 27:178-182.
- Keen, F. P. 1927a. Administration of western pine beetle control projects. United States Department of Agriculture, Bureau of Entomology. 20 p.
- Keen, F. P. 1927b. Manual of bark beetle control in western pine forests. United States Department of Agriculture, Bureau of Entomology. No. 58 (mimeographed). 38 p.
- Keen, F. P. 1929b. How soon do yellow pine snags fall? . Journal of Forestry 27:735-737.
- Keen, F. P. 1929d. The western pine beetle attacks a new host . Pan-Pacific Entomologist 5:108.
- Keen, F. P. 1930. The relations of windfalls to bark beetle epidemics . International Congress of Entomology, Proceedings 4:992-1002.
- Keen, F. P. 1931. Pine beetle control costs reduced through logging and salvage. United States Department of Agriculture, Yearbook 1931:428-430, illus.
- Keen, F. P. 1933a. An eight-year campaign against the mountain pine beetle . Forest Worker 9:13.
- Keen, F. P. 1936. Relative susceptibility of ponderosa pines to bark-beetle attack . Journal of Forestry 34:919-927.
- Keen, F. P. 1943. Ponderosa pine tree classes redefined . Journal of Forestry 41:249-253.
- Keen, F. P. 1945. Developments in forest insect control in the Pacific States during World War II. United States Department of Agriculture, Bureau of Entomology and Plant Quarantine 1945. 8 + 4 p.
- Keen, F. P. 1946. Entomology in western pine silviculture . Pan-Pacific Entomologist 22:1-8.
- Keen, F. P. 1949a. Notes on some forest insects of Baja California . Pan-Pacific Entomologist 25:92-93.
- Keen, F. P. 1949b. Pine bark beetles . United States Department of Agriculture, Yearbook 1949:427-432.
- Keen, F. P. 1950. The influence of insects on ponderosa pine silviculture . Journal of Forestry 48:186-188.
- Keen, F. P. 1952a. Bark beetles in forests . United States Department of Agriculture, Yearbook 1952:688-694.
- Keen, F. P. 1952b. Forest insect research: its place in the forest protection program . Western Forestry and Conservation Association, Proceedings 43:49-50.
- Keen, F. P. 1955a. A progress report on insect mortality studies on cut-over ponderosa pine lands. United States Department of Agriculture, Forest Service, California Forest and Range Experiment Station. 17 p. (processed).
- Keen, F. P. 1955b. The rate of natural falling of beetle-killed ponderosa pine snags . Journal of Forestry 53:720-723.
- Keen, F. P. 1955c. The western pine beetle (Dendroctonus brevicomis). United States Department of Agriculture, Forest Service Forest, Pest Leaflet 1. 4 p.
- Keen, F. P. 1958a. Cone and seed insects of western (U.S.) forest trees. United States Department of Agriculture, Technical Bulletin 1169. 168 p.
- Keen, F. P. 1958b. Progress in bark-beetle control through silviculture in the United States . International Congress of Entomology, Proceedings 10:171-180.
- Keen, F. P. 1966. The western pine beetle. United States Department of Agriculture, Forest Service, Forest Pest Leaflet 1 (revised). 4 p.
- Keen, F. P., and R. L. Furniss. 1937. Effects of subzero temperatures on populations of western pine beetle (Dendroctonus brevicomis Lec.). Journal of Economic Entomology 30:482-504, 5 figs.
- Keen, F. P., and J. E. Patterson. 1927. Preliminary studies on the relation of fire injury to bark-beetle attack in western yellow pine. Journal of Agriculture Research 34:597-613, illus.
- Keen, F. P., and K. A. Salman. 1942. Progress in pine beetle control through tree selection . Journal of Forestry 40:854-858.
- Snyder, T. E., W. Middleton, and F. P. Keen. 1923. The progress of forest entomology in the United States (Biographical sketch of A D Hopkins) . Journal of Economic Entomology 16:413-420.
- Thomas, H. E., W. G. Willis, and R. A. Keen. 1978. Controlling Dutch elm disease. Kansas State University, Agricultural Experiment Station, Bulletin 626. 16 p.
- Thompson, H. E., C. L. Kramer, and R. A. Keen. 1964. Dutch elm disease and its control in Kansas. Kansas Agricultural Experiment Station, Bulletin 434 (revised). 12 p.
- Thompson, H. E., S. M. Pady, R., and A. Keen. 1961. Dutch elm disease and its control in Kansas. Kansas Agricultural Experiment Station, Bulletin 434. 11 p.
- Thompson, H. E., W. G. Willis, and R. A. Keen. 1978. Controlling Dutch elm disease. Kansas State University Agricultural Experiment Station, Bulletin 626. 16 p.